package 洛谷.搜索;

import java.io.BufferedReader;
import java.io.InputStreamReader;
import java.io.StreamTokenizer;
import java.lang.*;
import java.util.*;
public class 八皇后 {
    public void dfs(){

    }
    public static void main(String[] args) {
        Reader3 sc = new Reader3();
        System.out.println("hello");
    }
}

class Reader3{
    public BufferedReader br=new BufferedReader(new InputStreamReader(System.in));
    public StreamTokenizer st=new StreamTokenizer(br);
    public void Token(){
        try {
            st.nextToken();
        }catch (Exception e){

        }
    }
    public int NextInt(){
        Token();
        return (int)st.nval;
    }
}
